Thomas j



,i `j `UN1TEDSTATES l ToaZZ whom z'may concern,"` f v f ","Be it known that LTHoMAs J KNArP, of the `city and county-of Philadelphia and State of Pennsylvania, haveinvented a new and Improved `Tool ifor Cutting Round 'Ienons on the Spokes `of Wheels; and I do hereby, declare that the "following is fa full, clear, and exact description of the same, ret# erence `being hadto "the "annexed `drawings making a part of `this specification, in

which-` i `Figure `lfis a longitudinal sectionot the toohtheplane o-ifsection being through the` center. Fig. 2 is afface view ot the same.` Fig. `3 is aside viewoftheusame.` o l Similar" lettersof"reference indicate) `corresponding `parts inthe severalgures. `This nventionizirelates to anew and im# `provedtool"forcuttinground tenons on the t endsof wheel spokesyand `consistsin'the peculiar" constructionof `the tool, as will be "hereafter fully,shownanddescribed, wherebyvthe tool may'be` adjustedtso as to cut tenons of `larger orl'smaller diameter, jas required@ l t l i i Togenablerothers skilled* in theqarttotully understandfpand construct my invention, I

will proceedfto describe,it.` ,i

,y A, (F`gs.*1,`and2,) representsthe shank v `ofthe tool,rwhichfistted'in the end ota ro- "gbgtating spindleA or mandrel.` `c'Ihe outer end of the shank; isl provided witha'bflanch, B, 1` having oblong slots, "(a, a,) throughit, and 1in ahub or boss, C, jat'thecenterot itsface side, see Fig. 1.` v 3;"

1 D, D, are two segments of acylinder or tube, having tlanches, E, atone end, through which screws,V pass, said screws, `(b) also Qpassing through the slots, `(a, a) in the tlanch B, (see Fig. 1).` The tianches, of the two segments havenscrews, passing v t-hroughlthem, and screws, (d) pass through b projections `(6)1 atthe oposite ends of the "segments, see Fig. 2. y The same screws passing through the flanches and projections of bothsegments. Theouter ends of the seg-l ments are provided; with `tlanchesl F, F, whichform the faceof the tool.` To one of" the tlanches, `F,`there is secured a cutter, G,

of chisel shape,rsaid cutter is secured to the anch by ascrew (if) which passes through there is placed a ring,

aslot` 1(g) in the cutter, and into the `flanch,

* 3 THoMsJ. KNPRQ PHILADELPHIA,rnNNsYLvANIA.

ADJUSTABLE TnNoivING-Too..

Specification of Letters `Patent No. `12,864, dated May 15, 1855.

andhaving a nut (it) on its end at the inner beveled head, and the slides of the slot (g) are also beveled, so that the head of the screw may be flush with the outer surface ot the cutter,see Fig. 3. v

Adjoining the cutter, G, there is a small bit or cutter, H, the cutting edge of which is placed at a right angle. with the cutting edge ofthecutter, G. Around the hub or boss, C,

I, see Fig. l, the diameter` of which corresponds to that of the 4tenons to be cut.

Operation: A ring, I, is placed around the hub or boss, C, the diameter of which ring, correspo-ndsfwith the diameter of the tenons to be, cut. The two segments are then adjusted'by operating the screws, (Z), c, d,) the inner ends of the segments, resting against the periphery of the ring, I, thusleaving the bore orthe aperture between the segments of a size" equal, to the diameters of the tenons to be cut. The cut-ter, G, being placed ob `liquely upon" the face or lanch, F, of the tool, one end otits cutting edge only acts upon the spoke, while the whole surface of the cuttingedge ot' the bit, or cutter, H

`acts upon the spoke. The shank, A, is

placed in a rotating mandrel or spindle and the end of the spoke pressed into the bore or aperture 'formed by the two segments, the bit, or cutter, H, cutting the tenon, andthe cutter, G, forms the shoulder at the inner i end ot the tenon.

secure ments, D, D, of a cylinder secured to the fianch, B, of the shank, A, by screws (b, b) and having screws (c, o) (d, ci) pass through @man livr'ion. y

the flanches, E, E, and projections (e, e) of both segments, for the purpose of allowing the segments to be placed nearer together or farther apart as desired, and having a hub or boss, C, at the center of the face of the flaneh, B, to receive rings,A I, of different sizes, corresponding to the diameter of the tenons to be out, and by Which rings the segments are properly adjusted the required distance apart for the purpose of cutting 10 tenons of various sizes, as herein shown and described. Y

THOMAS J. KNAPP. Witnesses:

PETER CAsToR, JOHN H. WATSON. 

